Add definition of cyclic group order.

2022-04-05 20:39:17 +08:00 · 2022-04-05 20:39:17 +08:00 · a49dc0cebc
parent a5f52df3a7
commit a49dc0cebc
1 changed files with 4 additions and 0 deletions
--- a/notes.org
+++ b/notes.org
@ -110,3 +110,7 @@ A group has a cyclic subgroup being itself.

 Every cyclic group is abelian.

+**** Order
+
+The smallest positive integer such that a^n = e. n = |a|. If a does not exist,
+we write |a| = infinity.